The 33 kV bus-bar of a station are in two sections A and B separated by a reactor. Section A is fed from four 10 MVA generators each having 20% reactance and section B is fed from the grid through 50 MVA transformer of 10% reactance. The circuit breakers have rupturing capacity of 500 MVA. Find the reactance of the reactor to prevent the circuit breakers being overloaded if a symmetrical short-circuit occurs on an outgoing feeder connected to it. [1·45 Ω]
The 33 kV bus-bar of a station are in two sections A and B separated by a reactor. Section A is fed from four 10 MVA generators each having 20% reactance and section B is fed from the grid through 50 MVA transformer of 10% reactance. The circuit breakers have rupturing capacity of 500 MVA. Find the reactance of the reactor to prevent the circuit breakers being overloaded if a symmetrical short-circuit occurs on an outgoing feeder connected to it. [1·45 Ω]
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The 33 kV bus-bar of a station are in two sections A and B separated by a reactor. Section A is fed from
four 10 MVA generators each having 20% reactance and section B is fed from the grid through 50 MVA
transformer of 10% reactance. The circuit breakers have rupturing capacity of 500 MVA. Find the
reactance of the reactor to prevent the circuit breakers being overloaded if a symmetrical short-circuit
occurs on an outgoing feeder connected to it. [1·45 Ω]
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